*{
    margin: 0px;
    padding: 0px;
}
.di{
    margin: 100px auto;
    background-color: rgba(208, 199, 199, 0.3);
    width: 500px;
    height: 300px;
}
.di .tb{
    margin-left: 100px;
   padding-top: 100px;

}

.di .btn{
  margin-left: 230px;
    margin-top: 20px;
}
.di2{
    height: 700px;
}